Gram-positive bacterial strep culture (qualitative) with specific identification and antimicrobial susceptibility testing

Why This Test Is Done

Your healthcare provider may order this test if you have symptoms like fever, chills, or unexplained infections, or if you’re at higher risk for certain bacterial infections. It helps determine if gram-positive streptococci are causing an infection and whether they need specific antibiotics.

How the Test Works

A small sample of your blood, urine, or other bodily fluid is collected and placed on a special growth medium. Bacteria, if present, grow over 24–48 hours. The lab then identifies the bacteria and tests how they react to different antibiotics to choose the best treatment.

Sample Collection

A sterile needle or swab is used to collect a sample from a vein, wound, or other body site. You may feel slight discomfort, but it’s usually over quickly. The sample is sent to the lab for culture and testing.

Results and Next Steps

Results may take 2–5 days. If bacteria are found, you’ll receive specific treatment based on the lab’s findings. If no bacteria are detected, further testing may be needed to rule out other causes of your symptoms.